into the major pelvic ganglion (MPG); and nine had bilateral cavernosal nerve crush and injection of NES cells into the corpora cavernosa. Erectile response was assessed by cavernosal nerve electrostimulation at 3 months, and penile tissue samples were evaluated histochemically for nitric oxide synthase (NOS)-containing fibres, tyrosine hydroxylase and neurofilament staining. RESULTSThe groups injected with NES cells into the MPG and corpora cavernosa had significantly higher intracavernosal pressures than the control group. Immunohistochemical staining also revealed differences in the quality of the NOS-containing nerve fibres. Neurofilament staining was significantly better in the experimental groups injected with NES cells. CONCLUSIONWe were able to isolate embryonic stem cells that had differentiated along the neural cell line and, using these NES cells intracavernosally, showed improved erectile function in a rat model of neurogenic impotence.

OBJECTIVE To present evidence that rats fed a high‐fat diet could serve as a useful animal model to study both lower urinary tract symptoms (LUTS) and erectile dysfunction (ED), as recent epidemiological studies have shown a strong association between LUTS and ED but the physiological basis behind this relationship is unknown. MATERIALS AND METHODS In all, 24 male Sprague‐Dawley rats were divided into two groups: nine controls were fed a ‘normal’ diet and 15 were fed a high‐fat diet (hyperlipidaemic rats). After 6 months all the rats had bladder and erectile functions evaluated using awake cystometry and cavernosal nerve electrostimulation, respectively. After the functional studies were completed, the penis, prostate and bladder were collected for immunohistochemical analysis. RESULTS The hyperlipidaemic rats had significantly higher serum cholesterol and low‐density lipoprotein than the controls (P < 0.05). The hyperlipidaemic rats also had significantly worse erectile function (P = 0.004) and developed more bladder overactivity (P = 0.004) than the controls. In the hyperlipidaemic rats there was significant muscle hypertrophy in the peri‐urethral lobe of the prostate (P < 0.001) and in the bladder (P < 0.05). There was also greater P2X1 (purinoceptor) staining as well as other molecular changes in the bladder of the hyperlipidaemic rats. CONCLUSIONS In this hyperlipidaemic rat model three abnormalities were consistently detected: prostatic enlargement, bladder overactivity, and ED. This rat model could be a useful research tool for understanding the common causes of LUTS and ED, as well as facilitating the development of preventive measures and better therapies to treat both conditions.

Introduction Penile prosthesis infections remain challenging despite advancements in surgical technique, device improvements, and adoption of antibiotic prophylaxis guidelines. Aim To investigate penile prosthesis infection microbiology to consider which changes in practice could decrease infection rates, to evaluate current antibiotic prophylaxis guidelines, and to develop a proposed algorithm for penile prosthesis infections. Methods This retrospective institutional review board–exempt multi-institutional study from 25 centers reviewed intraoperative cultures obtained at explantation or Mulcahy salvage of infected three-piece inflatable penile prostheses (IPPs). Antibiotic usage was recorded at implantation, admission for infection, and explantation or salvage surgery. Cultures were obtained from purulent material in the implant space and from the biofilm on the device. Main Outcome Measures Intraoperative culture data from infected IPPs. Results Two hundred twenty-seven intraoperative cultures (2002–2016) were obtained at salvage or explantation. No culture growth occurred in 33% of cases and gram-positive and gram-negative organisms were found in 73% and 39% of positive cultures, respectively. Candida species (11.1%), anaerobes (10.5%) and methicillin-resistant Staphylococcus aureus (9.2%) constituted nearly one third of 153 positive cultures. Multi-organism infections occurred in 25% of positive cultures. Antibiotic regimens at initial implantation were generally consistent with American Urological Association (AUA) and European Association of Urology (EAU) guidelines. However, the micro-organisms identified in this study were covered by these guidelines in only 62% to 86% of cases. Antibiotic selection at admissions for infection and salvage or explantation varied widely compared with those at IPP implantation. Conclusion This study documents a high incidence of anaerobic, Candida, and methicillin-resistant S aureus infections. In addition, approximately one third of infected penile prosthesis cases had negative cultures. Micro-organisms identified in this study were not covered by the AUA and EAU antibiotic guidelines in at least 14% to 38% of cases. These findings suggest broadening antibiotic prophylaxis guidelines and creating a management algorithm for IPP infections might lower infection rates and improve salvage success.

Bilateral cavernous nerve crush causes reproducible erectile dysfunction, consistent with prior experiments. High dose subcutaneous FK1706 therapy promotes significant neuroregeneration and erectile function recovery.

Augmented reality is widely used in aeronautics and is a developing concept within surgery. In this pilot study, we developed an application for use on Google Glass® optical head-mounted display to train urology residents in how to place an inflatable penile prosthesis. We use the phrase Augmented Reality Assisted Surgery to describe this novel application of augmented reality in the setting of surgery. The application demonstrates the steps of the surgical procedure of inflatable penile prosthesis placement. It also contains software that allows for detection of interest points using a camera feed from the optical head-mounted display to enable faculty to interact with residents during placement of the penile prosthesis. Urology trainees and faculty who volunteered to take part in the study were given time to experience the technology in the operative or perioperative setting and asked to complete a feedback survey. From 30 total participants using a 10-point scale, educational usefulness was rated 8.6, ease of navigation was rated 7.6, likelihood to use was rated 7.4, and distraction in operating room was rated 4.9. When stratified between trainees and faculty, trainees found the technology more educationally useful, and less distracting. Overall, 81% of the participants want this technology in their residency program, and 93% see this technology in the operating room in the future. Further development of this technology is warranted before full release, and further studies are necessary to better characterize the effectiveness of Augmented Reality Assisted Surgery in urologic surgical training.

Introduction Despite previous reports showing consistently elevated patient satisfaction with penile implantation, it is our impression that patients who have had a prosthesis placed often complain of penile shortening postoperatively. Aim We sought to evaluate if the release of the penoscrotal web would optimize patient perception and satisfaction regarding penile length after such procedure. Main Outcome Measure Utilizing a questionnaire, we evaluated patient satisfaction, focusing on phallic size. Methods Ninety patients (mean age 62) underwent penile prosthesis placement during a 17-month period. Forty-three were carried out with takedown of penoscrotal web during a 17-month period (group 1). Of group 1, 39 patients had an inflatable implant placed (inflatable penile prosthesis) and 4 had a semirigid implant. The patients were directly inquired with a seven-item questionnaire 3 months after the procedure. These results were then compared to a group of 37 patients that had penile implants placed without release of the penoscrotal web (group 2). All the patients involved in the study had a high insertion of the scrotum ventrally (penoscrotal web). Results Of the patients, 42/43 (98%) (group 1) reported good overall satisfaction of the surgical procedure; 36/43 (84%) reported some degree of increase in penile length; 5/43 (12%) reported no significant change in their perception of penile length postoperatively. The remaining two patients reported a decreased penile length. The clinical records from group 2 demonstrated 31/37 (84%) of the patients complained of penile shortening, and only one patient reported an increase in penile length. Postoperative complications in group 1 consisted of wound hematoma (2/43) and focal superficial wound dehiscence (3/43). The operative time for group 1 patients was approximately 12 minutes (mean 11.7) longer. Conclusions Release of penoscrotal web is a simple, safe, and reproducible procedure that can enhance patient perception of penile length and further improve satisfaction.

Introduction Advances in neurobiology have led to a surge of clinical interest in the development of protective and regenerative neuromodulatory strategies, as surgical therapies for prostate cancer often result in neuronal damage and debilitating loss of sexual function. Aim To investigate the dose-dependent efficacy of FK1706, a nonimmunosuppressant immunophilin ligand, for the recovery of erectile function following bilateral cavernous nerve crush injury in the rat. Main Outcome Measures Recovery of erectile function was assessed by cavernous nerve electrostimulation and reported as maximal increase of intracavernous pressure (ICP) and area under the curve (AUC). Changes in animal weights, percentage completion of treatment course, and survival were compared between groups. Methods Thirty-five Sprague–Dawley male rats were randomly divided into five equal groups: seven animals received a sham operation, whereas 28 animals underwent bilateral cavernous nerve crush injury, followed by subcutaneous injection of vehicle alone (1.0 mL/kg), or low (0.1 mg/kg), medium (0.32 mg/kg), or high dose (1.0 mg/kg) FK1706 5 days per week for 8 weeks. Results Erectile dysfunction did not occur in the sham group (mean maximal ICP increase of 100.8 ± 6.3 cmH2O), whereas nerve injury and vehicle treatment produced a significant reduction in ICP response to 34.4 ± 12.8 cmH2O. The mean ICP increase for high-dose FK106 treatment was 73.9 ± 6.3 cmH2O (P &lt; 0.01 vs. vehicle) compared with 58.3 ± 7.4 cmH2O and 56.9 ± 8.3 for low and medium doses (P &gt; 0.05). Similar stepwise findings were observed using AUC data. No significant maximal aortic blood pressure or weight differences occurred between groups and all animals completed treatment. Conclusion High-dose subcutaneous FK1706 therapy promoted recovery of erectile function following bilateral cavernous nerve crush injury in the rat. No significant differences between groups were observed for changes in weight, and the 8-week treatment course was completed for all animals.

In cases of severe penile deformity and curvature with erectile dysfunction the combination of penile plication and inflatable penile prosthesis placement is a method of repair that is well tolerated.